The Centers for Medicare and Medicaid Services (CMS) will delay the requirement that Medicare Shared Savings Program (MSSP) Accountable Care Organizations (ACOs) begin reporting all-payer Quality data through the new APM Performance Pathway (APP). ACOs will have the option to continue submitting data via the CMS Web Interface through the 2024 performance year. ACOs will have to report all three APP Quality measures (CQMs or eCQMs) beginning in 2025. In this article, we highlight the implications for ACOs, including the new APP quality measure set and strategies for successful reporting in future years.